The belt is made of one-sided spiral wires (either left or right) that are, in addition, entwined with each other. These spirals are joined by transverse wires edged by welding. The Type 502 represents another variant of this belt made of doubled spirals.
As a conveyor belt for quenching and tempering furnaces as well as for other heat processing up to 1200°C.
This belt is most commonly used for: